Logic Masters Deutschland e.V.

• Normal Sudoku rules apply, and all clues are standard.
• Light Orange (Entropic) Lines: Every set of three consecutive numbers must include a "low" (1-3), a "medium" (4-6), and a "high" (7-9) number.
• Between Lines: Digits placed on Between Lines must be strictly between the digits placed in the circles at the ends of those lines.
• Pink (Renban) Lines: Contain a non-repeating set of consecutive digits in any order.
• Quadruple Circles: Digits inside a white circle must appear in at least one of the four cells surrounding that circle.
• Green (German Whisper) Lines: Digits must differ from their neighbors by at least 5.
• Blue (Region Sum) Lines Box borders divide the blue lines into segments that have the same sum.
• XV: Digits separated by an X must sum to 10. Digits separated by a V must sum to 5

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